Perhaps you should try some spelling variations:
communication medium » communication mediums, communication media, communications media
oral communication » personal communication
developpement en » developpement et, developpement des, developpement de
3 developpement » de developpement, le developpement, et developpement
information 4 » information 2
use oral » use rural, ashe oral
medium 3 » medium _, medium 2, medium 7
4 use » _ use, 2 use, 3 use

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies _ information 4 use oral communication medium 3 developpement en afrique.*.